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N-terminal acetylation targets GTPases to membranes

The small GTPases Arl3p and Arl1p function sequentially to recruit diverse effector proteins to the Golgi apparatus. Similarly to ARF proteins, Arl1p is targeted to membranes by myristoylation. Arl3p, however, is not myristoylated. Recent work demonstrates that Arl3p, and its mammalian orthologue ARFRP1, are targeted to membranes by amino-terminal acetylation, which facilitates recognition by the membrane receptor Sys1p/hSys1.

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Figure 1: Membrane recruitment of ARF and ARF-like GTPases.

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Jackson, C. N-terminal acetylation targets GTPases to membranes. Nat Cell Biol 6, 379–380 (2004). https://doi.org/10.1038/ncb0504-379

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